The Legrand WNREZK10WH 3-way light switch kit uses a wireless switch to easily add control of a light or fixture from a second location, even in rooms or locations currently without 3-way wiring. Simply replace the existing light switch with the kit’s Radiant light switch (wired), then use the included battery-powered Radiant wireless light switch to add another point of control wherever it is desired. The wireless light switch mounts to any wall or surface – without cutting, wiring or tools – using the provided adhesive. The kit's devices come pre-paired to enable multi-location control in seconds. Simply add a Smart Gateway with Netatmo and use the Legrand Home Away app to control your lights from anywhere (and much more).